Summary Interface; General; Description Of The Leds; The Push Buttons - Carrier 30GX Installation, Operation And Maintenance Instructions

4.3 - Summary interface

4.3.1 - General

The summary interface includes a mimic diagram of the unit,
together with pushbuttons and LEDs. It gives quick access to
the main operating parameters of the unit. The summary
interface shown below is for a dual-circuit water-cooled unit.
kPa
MENU

4.3.2 - Description of the LEDs

LED INDICATION WHEN LIT
Green LED: the unit is authorised to start or is already running
Red LED:
• Lit = circuit A or unit shut down by alarm
• Flashing = circuit A or unit running with alarm present
Red LED:
• Lit = circuit B or unit shut down by alarm
• Flashing = circuit B or unit running with alarm present
Red LED: Lock contact open
Green LED: the unit is in cooling mode
Green LED: the unit is in heating mode
Yellow LEDs: from top to bottom - start/stop status of compressors A1 and A2. A
flashing LED indicates that the HP load shedding option is active on circuit A.
Yellow LEDs: from top to bottom - start/stop status of compressors B1 and B2. A
flashing LED indicates that the HP load shedding option is active on circuit B.
Key:
* : LED available depending on unit configuration.
kPa
kPa
A B
kPa kPa
SUMMARY INTERFACE

4.3.3 - The push buttons

The buttons allow immediate access to certain information
(items) supplied by the main interface. Pressing one of these
buttons causes the value of the item to be displayed
immediately in block 2 and the number of the corresponding
item to be displayed in block 1. It also lights the LED for the
menu containing this information. Pressing the same button
several times displays several pieces of information in
succession.
LED DISPLAY
Evaporator/condenser leaving water temperature in °C
Evaporator/condenser entering water temperature in °C
Control point (setpoint + reset) in °C
Press 1: Circuit A discharge pressure in kPa
kPa
Press 2: Circuit A saturated condensing temperature in °C
kPa Press 1: Circuit A suction pressure in kPa*
Press 2: Circuit A saturated suction temperature in °C*
Press 1: Compressor A1/B1 operating hours in h/10*
Press 2: Compressor A2/B2 operating hours in h/10*
Key:
* : Button available depending on unit configuration.
h : Hours
A
B
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